ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 291
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ATmega32
Manufacturer Part Number
ATmega32
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32
Flash (kbytes)
32 Kbytes
Pin Count
44
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
3
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
2
Eeprom (bytes)
1024
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega32-16AC
Manufacturer:
COMPAL
Quantity:
500
Part Number:
ATmega32-16AU
Manufacturer:
ATMEL
Quantity:
20 000
Part Number:
ATmega32-16PI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega32-16PU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
SPI Timing
Characteristics
2503Q–AVR–02/11
Figure 145. Two-wire Serial Bus Timing
See
Table 120. SPI Timing Parameters
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 146
SCL
SDA
5. This requirement applies to all ATmega32 Two-wire Serial Interface operation. Other devices
SS high to tri-state
t
SU;STA
SCK to out high
connected to the Two-wire Serial Bus need only obey the general f
SCK to SS high
SS low to SCK
SCK high/low
Rise/Fall time
SCK high/low
Rise/Fall time
SS low to out
Description
SCK period
Out to SCK
SCK period
SCK to out
SCK to out
Setup
Setup
and
Hold
Hold
Figure 147
t
HD;STA
t
t
of
LOW
for details.
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Salve
Slave
t
HIGH
t
HD;DAT
4 • t
2 • t
2 • t
Min
10
20
t
ck
ck
ck
ck
t
LOW
t
50% duty cycle
SU;DAT
See
0.5 • t
Table 58
Typ
3.6
10
10
10
10
15
15
10
SCK
ATmega32(L)
SCL
Max
1.6
requirement.
t
SU;STO
t
r
ns
µs
ns
t
BUF
291